IndraLab
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"USP7 deubiquitinates RAD18 which leads to stabilisation and up-regulation of PCNA ubiquitination."
"?Here, we identify the de-ubiquitylating enzyme USP7 as a critical regulator of Rad18 protein levels. Loss of USP7 destabilizes Rad18 and compromises UV-induced PCNA mono-ubiquitylation and Pol 畏 recruitment to stalled replication forks.?"
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"In response to replication stress, USP7 also deubiquitylates and stabilizes both Rad18 (so that it can monoubiquitylate PCNA) and the TLS polymerase, polymerase eta (POL-eta), and this facilitates the bypass of lesions through the error-prone TLS pathway."
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"This is likely concomitant with Pol eta deubiquitination by USP7 and PIAS1 and Rad18 dependent SUMOylation [XREF_BIBR, XREF_BIBR] (XREF_FIG A)."